MAX3243CAI+
Tedhnikal details :
The MAX3221/MAX3223/MAX3243 transceivers are 3V-powered
EIA/TIA-232 and V.28/V.24 communications interfaces
intended for notebook computer applications. A
proprietary, high-efficiency, dual charge-pump power supply
and a low-dropout transmitter combine to deliver true
RS-232 performance from a single +3.0V to +5.5V
supply. A guaranteed data rate of 120kbps provides
compatibility with popular software for communicating with
personal computers.
The MAX3221/MAX3223/MAX3243 require only 0.1µF capacitors
in 3.3V operation, and can operate from input voltages
ranging from +3.0V to +5.5V. They are ideal for 3.3V-only
systems, mixed 3.3V and 5.0V systems, or 5.0V-only systems
that require true RS-232 performance.
The MAX3221 is a 1-driver/1-receiver 16-pin SSOP version of
the 20-pin MAX3223 (2-driver/2-receiver). The MAX3243
3-driver/5-receiver, complete serial port is ideal for
notebook or subnotebook computers. The MAX3243 includes

one complementary always-active receiver. This
receiver can monitor an external device (such as a
modem) in shutdown, without forward biasing the protection
diodes in a UART that may have VCC completely removed.